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| Month | Race Name | Events | Location | Near | |
| February | Squamish Scrambler Snowshoe Run | 22 km, 10 km | BC, Canada | Squamish | |
| February | Pemberton Trail 50K | 50 km | AZ, United States | Fountain Hills | |
| February | Capilano Canyon Night Run - Mardi Gras | 18 km, 12 km | BC, Canada | North Vancouver | |
| February | Little Su 50K | 50 km | AK, United States | Big Lake | |
| February | Susitna 100 | 100 mi | AK, United States | Big Lake | |
| February | Black Warrior 50K | 50 km, 25 km | AL, United States | Moulton | |
| February | Cross Timbers Trail Run | 50 mi, 26.2 mi, 13.1 mi, 5 mi | TX, United States | Lake Texoma | |
| February | Mount Cheaha 50K | 50 km | AL, United States | Delta | |
| February | Woodside Kings Mountain Half Marathon & 5 Mile | 13.1 mi, 5 mi | CA, United States | Woodside | |
| February | XTERRA Trail Race Series - Runnin The Rocks - 10K Conyers, Georgia | 13.1 mi, 15 km, 10 km | GA, United States | Conyers | |
| February | Twin Peaks Ultra 50/50 | 50 mi, 50 km | CA, United States | Rancho Santa Margarita | |
| February | Louisville's Lovin' The Hills 50K and 15 miler | 50 km, 15 mi | KY, United States | Louisville | |
| February | Rocky Raccoon 100 | 100 mi, 50 mi | TX, United States | Huntsville | |
| February | Sylamore Trail 25K / 50K | 50 km | AR, United States | Allison | |
| February | Destin 50 Beach Ultra | 50 mi, 50 km | FL, United States | Destin | |
| February | Bandit Ultra Trail Run | 50 km | CA, United States | Simi Valley | |
| February | Mount Mitchell Challenge and Black Mountain Marathon | 40 mi | NC, United States | Black Mountain | |
| March | Prickly Pear | 50 km, 10 mi | TX, United States | San Antonio | |
| March | Antelope Island Buffalo Run | 50 mi, 50 km, 25 km | UT, United States | Syracuse | |
| March | Hinte-Anderson Trail (HAT) Run | 50 km | MD, United States | Aberdeen | |
| March | Foot Pursuit 5K | 5 km | IN, United States | Valparaiso | |
| March | Land Between the Lakes Ultra Trail Runs | 50 mi, 60 km, 26.2 mi, 23 km | KY, United States | Grand Rivers | |
| March | Laughlin Half Marathon & 5K | 13.1 mi, 5 km | NV, United States | Laughlin | |
| March | Marin Trail 10K & 20K | 20 km, 10 km | CA, United States | San Rafael | |
| March | Way Too Cool 50K | 50 km | CA, United States | Cool | |
| March | Catalina Marathon | 26.2 mi, 10 km, 5 km | CA, United States | Avalon | |
| March | Romancing the Island | 25 km, 12 km | CA, United States | Tiburon | |
| March | Spring Mountain Highway Madness | 60 km, 45 km, 30 km, 15 km | BC, Canada | North Vancouver | |
| March | Napa Valley Trail Marathon, Half Marathon & 10K | 26.2 mi, 13.1 mi, 10 km | CA, United States | Calistoga | |
| March | Pirates Cove Trail Run | 50 km, 30 km, 20 km, 8 km | CA, United States | Sausalito | |
| March | Grasslands Run | 50 mi, 26.2 mi, 13.1 mi | TX, United States | Decatur | |
| March | Burnaby Mountain Run | 22.4 km, 11.2 km | BC, Canada | Burnaby | |
| March | Bel Monte Endurance Run | 50 mi, 50 km, 25 km | VA, United States | Charlottesville | |
| March | Terrapin Mountain Marathon & 1/2 Marathon | 26.9 mi, 13.1 mi | VA, United States | Sedalia | |
| March | Diablo Trails Challenge | 32.1 mi | CA, United States | Walnut Creek | |
| March | Napa Valley Half marathon | 13 mi | CA, United States | Napa | |
| March | INTO THE WILD OC TRAIL RUN | 21 km, 10 km | CA, United States | Orange County | |
| March | The Rat Race | 10 km | NJ, United States | Waretown | |
| March | The Instant Classic Marathon Trail Run | 26.2 mi | VA, United States | Richmond | |
| March | Haulin' in the Holler | 25 km, 5 km | WV, United States | Eleanor | |
| March | Coyote Lake 5K, 10K, 15K Trail Run | 15 km, 10 km, 5 km | CA, United States | San Jose | |
| March | Double Top 100 | 100 mi, 100 km | GA, United States | Chatsworth |
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